A toolkit for building modeling frameworks like Active Record and Active Resource. Rich support for attributes, callbacks, validations, observers, serialization, internationalization, and testing.

Required Ruby Version

>= 1.8.7

Authors

David Heinemeier Hansson

Versions

  1. 8.1.4.1

    1. source

      1. 8.1.4.1 source November 04, 2026 (70.5 KB)
  2. 8.1.4

    1. source

      1. 8.1.4 source September 24, 2026 (70 KB)
  3. 8.1.3.1

    1. source

      1. 8.1.3.1 source July 29, 2026 (69.5 KB)
  4. 8.1.3

    1. source

      1. 8.1.3 source March 24, 2026 (69.5 KB)
  5. 8.1.2.1

    1. source

      1. 8.1.2.1 source March 23, 2026 (69 KB)
  6. 3.0.16

    1. source

      1. 3.0.16 source July 26, 2012 (37.5 KB)
Show all versions (465 total)

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